Improvement in ventilators



PATENT PATRICK MIHAN, OF OAMBRIDGEPORT, MASSACHUSETTS.

IMPRQEMENT IN VENTILATO RS.

Specification forming part of Letters Patent No. 196,099, dated October16, 1877; application filed Septen l ber '7, 1877.

To all whom it may concern:

Be it known that I, PATRICK MIHAN, of

Oambridgeport, of the county of Middlesex and State of Massachusetts,have invented a new and useful Improvement in. Ventilators; and dohereby declarethe same to be described in the following specification,and represented in the accompanying drawings, of which- Figure 1 is aside elevation, and Fig. 2 a vertical section, of a ventilator embodyingmy invention.

In this ventilator there is combined, with a flue in its upper part, aclose heat-radiator or steam receiver or vessel, an induct for supplyingit with steam, and an educt for discharging the steam from it, (the saidvessel,) and there is also within the said radiator or steamreceiver aforaminous vessel or deflector, which is so constituted and so appliedto the eduction-pipe as to cause the steam that may be received into theradiator to escape therefrom into the deflector, and thence into andthrough the educt.

There is also to the flue and its auxiliaries, as

' mentioned, a frustoconical or other proper shaped hood or cap, which,in this instance, is represented as fixed concentrically to and issupported by the educt.

In the drawings, the flue or tube A, where it is to receive theradiator, is -represented as enlarged or composed of two hollow conicfrustums, a b, united at their larger bases, the remaining portions 0 dof the flue being cylindrical. The lower part, d, extends a shortdistance up within the frustum b, in order to form between the two atrough, e, which I provide 1 with an opening, f, inits side,for thedischarge from it of any water that may be caught in or by the trough.This trough is to prevent any water that, dropping on the radiator, maybe deflected from it and gather on or pass down the inner surface ofeither of the frustums a b from passing into and down the flue part d.

Within the enlarged part of 'the flue is the close heat-radiator. B,which, as shown, is formed of two hollow cones, united at their largerbases. An induction-pipe, O,leads into the lower part of the vessel B.Another or eduction pipe, D, extends upward from and downward within thevessel B, and into another or conical vessel, E, arranged in the saidvessel B, in manner as represented. The top of the vessel E isperforated with numerous holes or is foraminous.

The vessel B is supported within the flue by radial wings i z", andthere is over the top of the flue an open cap or bonnet, F, arrangedtherewith, and supported by the steam-eduction pipe, in manner asrepresented.

Furthermore, there is at the apex of the deflector E a small hole, 7:,for the discharge from such vessel of any condensed steam.

This ventilator is particularly designed for use on buildings providedwith steam-engines or other means of producing what is termed wastesteam, generally discharged into the atmosphere. My obj ect is toutilize this steam in other words, intercept more or less of its heatand cause it to aid in producing a current of air within and up througha ventilating-flue. To this end, I place within the upper part of suchflue a radiator, into and through which the steam shall be caused topass before flowing into the atmosphere, and within this radiator Iemploy a deflector, as described, into and through which the steampasses after being caused by such deflector to flow uniformly againstthe inner surface of the radiator. Were the escape-pipe to open directlyout of the upper end of the radiator, the steam in passing through thesaid radiator would be liable to rush in a current through it withlittle or no impingement against its sides. The deflector prevents this,and spreads or deflects the steam against the inner surface of theradiator.

By arranging the radiator within the upper part of the ventilating-flueof a building, the column of air within such flue becomes heated at topby said radiator, when receiving steam. This induces a draft or currentof air up the flue, and prevents any downward draft therein, such asoften takes place When the air receives heat at the bottom of a flue.

The advantages of my ventilator are theprevention of descending currentsof cool air in the flue and the utilizing of waste steam, as set forth.

I claim 1. In combination with aventilating-flue,A, a steamheat-radiator, B, substantially as described, and its inductO and eductD, arranged in the upper part of said flue, as and for the purpose setforth.

2. The combination of the foraniinons deflector E, substantially asdescribed, with the heat-radiator B and its induct C and educt I),placed in the upper part of a ventilatingflue, A, all being arranged andto operate as set forth.

3. The combination of the cap or hood F, ventilating-flue A, steamheat-radiator B, as explained, and its induction and ednction pipes C D,all arranged and applied substantially as set forth.

4. The combination of the cap or hood F, ventilating-flue A, radiator B,deflector E, and the induction and eduction pipes G D, all beingarranged and applied essentially as shown and described.

5. The ventilating-flue A, provided with the radiator B and itsinduction and eduction pipes (J D, and with the trough eand its educt f,arranged as specified.

PATRICK MIHAN.

Witnesses:

R. H. EDDY, S. N. PIPER.

